Asap
match each cause of an environmental issue to the effect that threatens the world today

increase in intensity of ultraviolet rays
air pollution
climate change

increase in automobile traffic
rise in global temperature
ozone layer depletion

Here are the matches:


increase in automobile traffic  - air pollution
(the emission that created by the vehicles is the main source of today's air pollution)

rise in global temperature  - Climate change
(The rise in temperature started to affect the way organism on the earth conducting their biological activities)

ozone layer depletion - increase in the intensity of ultraviolet rays 
(ozone layer is the layer within the atmosphere that protect the earth from the harm of direct sun light)

4.a depression is the answer